sudo: running code that requires superuser priviliges

[harendra-kumar]

We may require super user privileges for some parts of the code, but we do not want to create an executable for that case and use sudo to execute it. Instead we can do the following for controlled execution of privileged code (to avoid accidental misuse):

• Run the program executable with raised privileges using sudo or some other way
• Provide a withSudo function that supplies a process handle to run code that requires higher privileges and it lowers itself to normal privilege user. It can fork a helper process to run privileged code. The sudo handle can be used to execute code in the privileged process and return results.